Electrical-rail bond.



H. B. CONWAY,

ELECTRICAL RAIL BOND.

APPLIOATION FILED NOV. 7, 1910.

Patented Apr. 25, 1911.

'lboltwho-m it concern:

UNIT D STAT S P ENT OFFICE.

"ELECTRICAL-RAIL BOND.

mam.

lie it known that I. llxmir ll. (0.\'\\'.\\', a eitiken of the United States, residing. at Boone. in the county of Fayette and State of Vest Vjrginia. have invented new and useful Improvements in Electrical-Rail Bonds-of which the following is a specification, I a

This invention relates to an electrical rail bond,.and the primarv object of the same is to provide a device'of this class of a simple and eti'ective nature which maybe readily attached to or detached from arail and operating to reliably and positively establish a contact between the bonding wire and the rails.

"Vith this and other objects and advantages in view the invention consists in the constructionand arrangement of the several parts which will be more fullyhereinafter described and claimed.

In the drawing: Figure l-is a side elevation illustrating the united extremities ofrails having the improved bond applied thereto. Fig. 2 is a transverse vertical sec tion on the line 2-2, Fig. 1. Fig. 3,illustrates the bonding wire attaching means, the parts of the latter being separated and shown vin perspective. r

The numerals 5 and (i designate rail sections adapted to constitute aneleetrical rail connected at their abutting ends by suitable fish plates :7 and bolts and nuts 8. Theprecise fastening or connecting means for the rail section extremities is not, however essential and may be modified at will. The bond-embodying the features of the inventioneonsists of a threaded bolt 9 having a tapered liead 10 with an opening 11 extending transversely therethrough and a slightly flattened side 12 to facilitate application of the bolt, and a tubular bushing 13 of truncated conical form having diametrically opposed recesses 14 in the edge of the enlarged end thereof, and a securing nut 15. A bond-- ing wire 16 is also included in the improved bond and extends do'wnwardly and along the flanges of the rails at its intermediate portion. To accommodate the application of the bolt 9 and bushing 13, the webs of the rail sections 5 and 6 have openings 17 formed therethrough, one in each, at a short distance from the rail joint bolt" openings, and in each opening 17 is inserted one of the bolts 9 with the bushing 13 thereover, as shown by Specittcatitm of Letters Patent Application filed November 7, 1919. Serial N 0. 591,135.

-' Fig. 2.-and after the extremity of the wire 16 has been inserted through the opening 11" in the ta )ering head of the bolt the latter is tightened up by application thereto of the nut 15 which is turned up tightly against the opposing side of the web of-the rail to draw the tapering head 10 and at the same time tightly force the l. nshing 12- into the opening 17. each extremity lb of the wire being longitudinally straight and held against movementbv engaging the recesses the bushing. ()wing to the contour of the tapermghead 10 of the bolt 9, said head bethe latter is 1preferably formedof metal that will est'ablisi a tight joint oreontaet at all 13 being preferably copper. After the straight extremities 18 of the wire 1b are senvithin the recesses or seats 14. of 'the bushing. sald'wn'e will be prevented from turn nuts p \Vhat is claimed as new is:

1. In an eleetrieal rail bond. the combination witlrrail sectionsharingopenings there- 'tl-irough, of a bolt having a tapered head with an opening extending transversel) through the same and provided with a tapered bushing loosely titted thereover and the bushing being equally tapered at its outer and inner surfaees. a bolt and bushing being inserted to each opening. a nut applied to each bolt for drawing the same and the bushing relatively to the opening. the reduced extremit-yrot' the bushing being drawn into the opening therefor infirm contact with the bolt and also with the adjacent portion otthe wall of the opening, and a bond- ..ing wire having its extremities inserted through the openings of the bolts and held against the outer ends of the bushings;

2. Tn an electrical rail bond the combination with rails having openings through the atented Apr. 25. 1911.

ponies firmly jammed in the bushing 13 and points with the wall of the opening 17, the' metal used in the formation of the bushing i ing or shitting out of place and the inter-' it will or one-HALF :ro LEE or seats 1- at. the outer or enlarged end of cured by the tapering head 10' of the bolt 9 be tightened up through the medium of the 2 i 99o,e34'

webs thereof, of a threaded bolt formed with of the bushingglhe intermediate portion of a tapered head having an opening ex'tend- 1 the wire hemgdvpre-5edandextemlmgalong I ing transverselyiherelhrough and a laper the flanges oftheconneet ed rails. I I

.1n bushing thereon mserteu in each rail 3 In testimony whereof I have hereunto set a we opening, the outer enlarged end'of the gmy hand in presence of two subseribing witbushing having dizunetrieully )p posed sea ts nesses. therein, a nut to engage each bolt, and a ,o HARRY B. (IOXVAY. bonding wire having straight extremities in- \Vitnesses: I

serted through the openings of the tapered 3 V Gunmen bfilnuvvnihi 10 heads of the bolts and drawn into the seats Tues. G LLIAN. 

